Dr Mason Edward Gentner, MD - Medicare Emergency Medicine in Saint Louis, MO

Dr Mason Edward Gentner, MD is a medicare enrolled "Emergency Medicine" physician in Saint Louis, Missouri. He went to Pennsylvania State University College Of Medicine and graduated in 2021 and has 5 years of diverse experience with area of expertise as Emergency Medicine. His current practice location is 1 Barnes Jewish Hospital Plz, Saint Louis, Missouri. You can reach out to his office (for appointments etc.) via phone at (314) 747-3000.

Dr Mason Edward Gentner is licensed to practice in Missouri (license number 2026039078) and he also participates in the medicare program. He may accept medicare assignments (which means he may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and his NPI Number is 1508450602.

Contact Information

Dr Mason Edward Gentner, MD
1 Barnes Jewish Hospital Plz,
Saint Louis, MO 63110-1003
(314) 747-3000
Not Available

Map and Direction




Physician's Profile

Full NameDr Mason Edward Gentner
GenderMale
SpecialityEmergency Medicine
Experience5 Years
Location1 Barnes Jewish Hospital Plz, Saint Louis, Missouri
Accepts Medicare AssignmentsMay be. He may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Mason Edward Gentner attended and graduated from Pennsylvania State University College Of Medicine in 2021
  NPI Data:
  • NPI Number: 1508450602
  • Provider Enumeration Date: 03/01/2021
  • Last Update Date: 09/01/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 1951710730
  • Enrollment ID: I20250917002409

Medical Identifiers

Medical identifiers for Dr Mason Edward Gentner such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1508450602NPI-NPPES
01089088AOtherINSTATE MEDICAL LICENSE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 2026039078 (Missouri)Primary
207RC0200XInternal Medicine - Critical Care Medicine 2026039078 (Missouri)Secondary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Mason Edward Gentner allows following entities to bill medicare on his behalf.
Entity NameUPMC Community Medicine Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1558976092
PECOS PAC ID: 2062318975
Enrollment ID: O20040217000388
Entity NameUniversity of Pittsburgh Physicians
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619935004
PECOS PAC ID: 8729990239
Enrollment ID: O20040308000883

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Mason Edward Gentner is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Mason Edward Gentner, MD
310 W Losey St,
Scott Afb, IL 62225-5250

Ph: (618) 256-9355
Dr Mason Edward Gentner, MD
1 Barnes Jewish Hospital Plz,
Saint Louis, MO 63110-1003

Ph: (314) 747-3000

Reviews and Comments


Emergency Medicine Doctors in Saint Louis, MO

Sean Oliver Cavanaugh, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 660 S Euclid Ave # 8072, Washington University Emergency Medicine, Saint Louis, MO 63110
Phone: 314-362-9177    
John Verhey, MD
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Medicare: Medicare Enrolled
Practice Location: 1 Barnes Jew Hosp Plz, Saint Louis, MO 63110
Phone: 314-362-9177    
Dr. Mackenzie Ann Mcknight, MD
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Practice Location: 1 Barnes Jew Hosp Plz, Saint Louis, MO 63110
Phone: 314-362-9177    
Nagla Abdelmalek, M.D.
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Practice Location: 915 N Grand Blvd, Saint Louis, MO 63106
Phone: 314-652-4100    
Dr. Jose I Alvarez, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 6150 Oakland Ave, Saint Louis, MO 63139
Phone: 314-768-3090    Fax: 314-768-3031
Rahul Gupta, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 10010 Kennerly Rd, Saint Louis, MO 63128
Phone: 314-525-1906    
Dr. Opeolu Makanju Adeoye, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1 Barnes Jewish Hospital Plz, Dept Emergency Med, Saint Louis, MO 63110
Phone: 314-362-9123    Fax: 314-362-0478

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.